Secondary Cat Delete

[TheSt|G]

Originally Posted by 2tonik

So do I understand correctly that having a shop install the SuperSprint headers on a street car would be a Federal violation due to the fact that the primary cats are located in the factory exhaust manifold, thus resulting in the removal of emissions equipment in the eyes of the Feds?

For some reason I was hoping that as long as the car passed emissions, which according to St|g, it should, having the SuperSprint headers installed wouldn't be illegal.

I don't/can't wrench so I suppose I'd have to find a mechanic to do the work "out of the shop" or otherwise off the clock...

That would be correct, it is illegal. Passing plug in emissions via the Evolve tune is much the same as using a fake ID to buy alcohol as a minor. It just happens to be a law few care about.

[MarkkyyMan]

Damn EPA

[2tonik]

Hmmm, that's frustrating. I am generally a "play by the rules" type guy, at least at this stage of my life. On the other hand, a tuned header is a beautiful thing and really seems to be what the N52 needs to be fully realized, along with the DISA conversion.

I am looking forward to fleshing out the upper end of the N52 power delivery and expect that the SuperSprint header is an important part of that equation.

[MarkkyyMan]

You could sign another off road waiver and tell the shop it is strictly for autocrossing.

It will pass emissions as long as a sniffer is not involved in the tailpipe.

[TheSt|G]

Originally Posted by MarkkyyMan

You could sign another off road waiver and tell the shop it is strictly for autocrossing.

It will pass emissions as long as a sniffer is not involved in the tailpipe.

Even then, I have little doubt that with warmed up secondaries I could pass a PA sniffer test. I did it with my E36 M3 when it was briefly running straight pipes.

[Kgolf31]

If I assume correctly, Berk or N55 mids will bolt right up to our headers with no fitment issues?